public static string JsonConvertByNewtonsoftJsonAll(object obj)
        {
            try
            {
                IsoDateTimeConverter timeFormat = new IsoDateTimeConverter();
                timeFormat.DateTimeFormat = "yyyy-MM-dd HH:mm:ss";
                string convert = JsonConvert.SerializeObject(obj, Newtonsoft.Json.Formatting.None, timeFormat);
                return convert;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }